Tube-frame bracket



Nov. 13,1928. 1,691,148

E. E. CLARK TUBE FRAME BRACKET Filed March 26, 1927 b e/72W I fl/m fzff/a V%;E?KY

Patented Nov. 13, 192 8.

UNITED STATES "PATENT OFFI E-i EVERETT E. CLARK, or 'woEeEsTEn,uAssAcHus TTs, As srenon To cnomgToN e KNOWLES LOOM wonxs, 0F-WORCESTER, massAc UsETTs, A' conronA Ion or c MASSACHUSETTS.

TUBE-FRAME BRACKET.

.Applicationfiled mar 26, 1927. Serial No. 175 185.

This invention. relates to a tube frame bra cket, such as is commonlyusedin Axmlnster carpet looms. These brackets are used for supportingthe yarn tubes and spools and for attacl the same to the transport ngpattern chains. v y v v It is the object of my lIlVGlltlOILtO improvethe construction of suchtube frame brackets and 'i'particularly toprovide an improved form of spring whiehpwill be :morerehable andefiective in use-and less subject to accidental breakage.

My invention further relates to arrangements and combinations of partswhich yvill be hereinafter describedandmore PHItlClk larlypointedoutintheappended claims.

Two forms ofithe invention areshown 1n the drawings in which Fig. 1 'isa sectional front elevation ofa portion of atube :t'rame and bracketembodying my improvements;

Fig. 2 is, an end elevation of the bracket,

.looking in the direction of the arrow,,2 ;.1n

Figv V Fig.- 3 is asectionalplanview, takelralong the line 33 in Fig. 1;1 I

Fig. 4: is a sectional Trent elevation of a modification; and i y Fig. 5is a sectional plan view, takenalong the line 5--5 in Fig. 4. i v

Be'lerring particularly-to Figs. :1 to 3, I have indicated aportion-etarectangularnnetallic tube frame 10 having .a series of yarntubes ll secured thereto. Z'Ilnbeiliramebrackets are mounted in eachendof the, tube frame 10 [and each bracketucomprises an'L-shaped bearingmember 12 having, an .opening 13 .111 itsiupper end for: the gudgeonofayarnspool S. A'second or outer. portion 14.01? the bracket ispermanently. secured to :the' portion 12 by Welding orothersuitablegneans, and has an offset p0rtio1i15 adapted toex:

tend upward between the links 16 ofia transporting patternchain. Thelower :end pormember 20 .is displaced inwardly asindt tions 17 and 18 ofthe members 12 and.lxlar ev offset laterally and extend in parallelrelation within the tube frame 10. I

A U-shaped member20 isfitted betweenthe offset portions 17 andi18 .andat its outer ena'd abuts. the inner face of thememberll. The

cated :at 22,. to provide a -bearing for a :cross pin-23 and theupperleg of the member 20 has a reversely.curvedportion 2a to provide arecess 24. for a a purpose to be described.

The member 14 is slotted at 25 and 26 to re ceive asprin-ghook 30 andthe member 20 is :slottedat 81 for the same purpose. 1 The hook 30hasareverse bend at its lower end and is also olf set laterally .so-thatitflpresents :a sub stantially L-shaped-outline when in operativeposition.- i i The U-shaped memberQO is preferablyper-f manently securedbetWeenthemembers 12 and 14$ in some convenient manner as byweldingthereto. .SCIG'WSI33 areprovided to se- 9 cure. the bracket to ithe tube frame and these e screws. are preferably.extended intoithe nennber QOandgform-an additional-securing means i therefor. i; L

The parts; are assembled :by inserting one end of the spring3Q-tl1rougl1theslot 2'5 and the. other end of the spring through theslots 26 21114131, pushing the spring inward until the extreme" end ofits lateral projection is received in the recess 1 258-. formed byt-hereverse bend vE24. Thecross pin Q3 isithen inserted, retaining thespring sfi-rmly in position.v The; abrupt upward turn of the. spring 3Oat the Ipoint 35 provides-a shoulder which engages the cross pin 23andprevents outward displacement of; the spring.

When-a tube frame is attached to or detached from a;t-ransporting chain,the spring hook 3O'is pushed .awayzfronnthe chain 16 over a substantialrange of movement. This repeated bending movement has frequently causedbreakage in the springs heretofore.

end ofaspring hook 46. The hook ,46 exe tends'through theslotsAlQ and 43and is retained .in position by v cross pin 4T inserted tion 49 engagingthe upper end of the slot- I chain engaging spring" hook of through theside walls of the tube frame 48, after assembly of the bracket therein.I

The spring 46 has a laterally curved por- 43 and preventing upwarddisplacement of the hook. The spring l6 also has adownwardly curvedportionO abutting the cross pin 47 a'ncl'preve iting outwarddisplacement of the spring,after'the pin 47 is inserted. This form of myinvention is somewhat simpler than that previously described and retainsmany of the advantages thereof.

' L-sh'ape formation mounted in said bracket and havlng'lts offset'lowerend extending freely a substantial distance within said tube frame.andsecured at-itsinner end in sub'stan' tiaily fixed relation to saidtube frame bracket, said spring being free to flex throughoutsubstantially its entire length.

2. In a 10011 a rectangular yarn tube frame, and a tube frame bracketcomprising an L-shaped spool-supporting member, an L-shapedchain-engaging member having'upper andlower. slots therein, said membersbeing permanently secured together and having their parallel offsetlower end portions ex tending within said tube frame, and a substantially L-shaped angularly movable chainengaging hook extendingthrough saidupper' and lower slots and having its lower end extendingfreely a substantial distance within said tube frame and'positively heldfrom outward displacement.therein, said spring being free to flexthrougl'iout'substantiallyits entire length. I n

3. In a loom, a rectangular yarn, tube frame. and atube framebracketcompri'sing an L-shaped spool-supporting member, an

, L-shaped chain-engaging member havingup- )er and lower slots thereinsaid members being permanently secured togetherandhaving their'p'aralleloffset lower end portions'ex- (ill tending within said tube frame,'and achainengagingspring hook of general L-shape formation extendingthroughthe upper and lower slotsin said chain-engaging member andhavingits offset lower portion extended freely a substantialdistanceWithin said tube frame, andmeans to preventoutward displacement of saidspringhook, the inner end of said springhook being also held 1n engage'ment with said bracket within said tube frame, said spring being freeto flex'throughout substantially its entire length.

' 4. In a loom, a rectangular yarn tube frame,

and a tube frame bracket comprisingan L- shaped spool-supporting member,an L- shaped chain-engaging member having upper and-lower slotstherein,said members being permanently secured together and having.theirjparallel oii'set lower end portions exshaped spool-supportingmember, ;an L- shaped chain-engaging member having upper and lower slotsthere1n,"sa1d members be ng permanently secured together and havingtheir parallel offset lower end portions extending within said tubeframe, and a'substantially L-shaped chain-engaging spring hook extendingthrough said upper andlo'wer slotsand pivotally' mounted at the end ofsaid tube frame'and having its offset lower end extending freely asubstantial distance within said tube frame and positively held fromvertical displacement therein, said spring 'throughoutits lengthcomprising a single continuous yielding member, and being free tofie'xthroughout substantially its entire length. I

' 6. In a loom, a rectangular yarn tube frame, and a tube frame bracketcomprising an L- shaped spoolssupporting member,.' an L- shapedchain-engaging member having upper and lower slots therein, said membersbeing permanently secured together and having their parallel offsetlower end portions extendingwithin said tube frame, a chain-engaging"spring hook of general L-shape formation'extending through the upper andlowerslots in said chain-engaging member and having its oflsetlowerportion extended freely a substantial distance withinsaid tube, I

frame, and means to prevent-outward displacement of said spring hook,the inner end of said spring hookbeingpositioned'inza recess atthe innerendof said "bracket and, being held-undertension'thereby, and saidspring being free to flexthroughout substantially its entire length. g

'7. In a loom, a rectangularyarn tube frame, and a tube frame bracketcomprising an L- shaped spool-supporting member, an .L- shapedchain-engagingmember having upper and lower'slotsthereimsaid membersbeing permanently secured together and having their paralleloflset'lower end portions ex' tending within said tube frame, a U-shapedspring-retaining member secured between said parallel oii'set portionsand having a reversely bent inner end portion, and a chainengagingspring hook having an offset lower end said hook extending through theupper and lower slots in said chain-engaging member and within said tubeframe and being retained from outward displacement therein and saidspring hook being held under tension by engagement of the inner end ofits offset portion with the reversely bent portion of saidspring-retaining member, and said spring being free to flex throughoutsubstan'- tially its entire length.

8. In a loom having a rectangular hollow 7 tube frame, a tube framebracket comprising arigid structure having upper and lower portionsextending Within said tube frame, one of said portions having a recesssubstantially within said hollow tube frame and on the side of saidportion toward the center line of said tube frame, said recess facingthe open end of said tube frame, and a spring hook mountedin saidbracket and having a portion extending substantially within said tubeframe and having its inner end seated in said recess, said "spring beingthereby held under tension and held from vertical displacement and saidspring being free to flex throughout substantially its entire length.

In testimony whereof I have hereunto affixed my signature.

EVERETT E. CLARK.

